Dyfyniad APA

Wiersma, W. (2005). Research methods in education: An introduction. Boston: Pearson.

Dyfyniad Arddull Chicago

Wiersma, William. Research Methods in Education: An Introduction. Boston: Pearson, 2005.

Dyfyniad MLA

Wiersma, William. Research Methods in Education: An Introduction. Boston: Pearson, 2005.

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